[evlatests] ea02 at X-band -- poor switched power

[Rick Perley]

    The switched power system reports that ea02 has a very high system 
temperature across all of X-band -- a few hundred Kelvin.  But perusal 
of the data clearly shows that the problem is not in the receiver's 
sensitivity, but in the switched power itself.  The switched power value 
is about 20 'counts' -- about 1/10 or normal.  This would be expected if 
the system temperature really was 10 times too high.  But the sum power 
increments by exactly the normal value when going on a strong source 
(3C84 in my case).  The augmentation in total power for ea02 when moving 
to 3C84 is by about 10% -- exactly the same as every other X-band antenna. 

    So the problem is in the switched power, which for some reason is 
only delivering 1/10 of what it should (or in the synchronous 
demodulation, I suppose).  The problem is in both IFs, and in both 
polarizations.